Wrench.



No. 868,537. PATENTED 001 .15, 1907.

' 1). J. DAWSON & J. R. STROHBAGH.

WRENCH.

APPLICATION FILED JULY30.1907.

2 mm i UNITED STATES PATE NT OFFICE.

DAVID J. DAWSON AND JOSEPH R. STROHBAOH, OF FREEDOM, PENNSYLVANIA.

WRENCH.

Specification of Letters Patent.

Patented Oct. 15,1907,

Application filed July 30, 1907. Serial No. 386,212.

[0 all whom it may concern:

Be it known that we, DAVID J. DAWSON and JosEPH R. SIROIIBACH, citizensof the United States of America, residing at Freedom, in the county ofBeaver and State of Pennsylvania, have invented certain new and usefulImprovements in Wrenches, of which the following is a specification,reference being had therein to the accompanying drawing.

This invention relates to wrenches, and more particularly to that typeof wrench commonly known as a quick acting monkey wrench. V

The invention has for its object the provision of positive and reliablemeans in connection with a wrench whereby the movable jaw thereof can beeasily and quickly adjusted.

Another object of this invention is to dispense with the use of screwthreads and nuts for holding the jaw of a wrench in a position to whichit is adjusted.

With the above and other objects in view which will more readily appearas the invention is better understood, the same consists in the novelconstruction, combination and arrangement of parts to be hereinaftermore fully described, and then specifically pointed out in the appendedclaim. 7

Referring to the drawings, Figure 1 is an elevation of a wrench, Fig. 2is a similar view partly in section, Fig. 3 is a horizontal sectionalview of a wrench taken on the line iII-III of Fig. 1. Fig. 4 is aperspective I view of the locking member of the wrench.

in the accompanying drawings, 1 indicates the shank having a detachablehandle 2 and a fixed gripping jaw 3. The shank l is substantiallyrectangular in cross section, and upon its one edge is provided withteeth 4.

Slidably mounted upon the shank 1 is a movable jaw 5, comprising agripping extension 6 and side plates 7 said side plates being connectedtogether by pins 8 and 9, the former serving as a pivot pin for alocking member 10, while the latter serves to prevent the jaw 5 frombecoming accidentally disengaged from the shank l. The locking memberupon its one edge is provided with teeth 11 for engaging the toothedshank 1, while the lower part of the member extending beneath themovable jaw 5 terminates in a handle 12 to permit of the member 10 beingeasily moved. its inner face, the locking member is cut away so as toclear the guardpin 9 as clearly shown in Fig. 2.

To adjust the movable jaw 5 of the wrench it is only necessary to movethe member 10 outwardly, at which tiinethe jaw 5 can be moved to engagean object, and then the member 10 swung inwardly to engage the shank 1and hold the movable jaw in its adjusted position.

Since the Wrench is constructed of practically four parts, it can bemanufactured at a comparatively small cost. The simplicity ofconstruction also prevents the wrench from being injured by roughhandling,

and the rapid adjustment of the jaw 5 is adapted to facilitate the workof a mechanic or person having use for a wrench.

Having fully described our invention, what we claim and desire to secureby Letters Patent, isi In a wrench, a shank having a handle on one endand a fixed jaw on the other end, said shank provided on the rear edgethereof with teeth, a movable jaw slidable on the shank open along itsrear edge throughout the length of tne jaw and having two pinstherethrough in proximity to the shank, one pin acting as a pivot pinand the other as a guard for the jaw, and a toothed locking membermounted on said pivot pin being cut away on its inner face to clear theguard pin and one end extended beyond the jaw to form a finger grip.

' In testimony whereof we aflix our signature in the presence of twowitnesses.

DAVID J. DAWSON. JOSEPH R. STROHBACH.

Witnesses Mex H. SROLOVITZ, C. V. Baooxs.

